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PDF SC1062 Data sheet ( Hoja de datos )

Número de pieza SC1062
Descripción Low Voltage Transmission Circuits
Fabricantes Shaoxing Silicore Technology 
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Silicore
LOW VOLTAGE TRANSMISSION CIRCUITS
WITH DIALLER INTERFACE
SC1062/SC1062A
GENERAL DESCRIPTION
Outline Drawing
The SC1062/SC1062A are
integrated circuits that perform all
speech and line interface functions
required in fully electronic telephone
sets. They perform electronic switching
between dialing and speech. The ICs
operate at line voltage down to 1.6V DC
(with reduced performance) to facilitate
the use of more telephone sets connected
in parallel.
All statements and values refer to all versions unless otherwise specified.
F E AT U R E S
z Low DC line voltage: operates down to 1.6V (excluding polarity guard)
z Voltage regulator with adjustable static resistance
z Provides a supply for external circuits
z Symmetrical high-impedance inputs (64k) for dynamic, magnetic or
piezoelectric microphones
z Asymmetrical high-impedance input (32k) for electret microphones
z DTMF signal input with confidence tone
z Mute input for pulse or DTMF dialing
- SC1062: active HIGH (MUTE)
- SC1062A: active LOW (MUTE)
z Receiving amplifier for dynamic, magnetic or piezoelectric earpieces
z Large gain setting ranges on microphone and earpiece amplifiers
z Line loss compensation (line current dependent) for microphone and earpiece
amplifiers
z Gain control curve adaptable to exchange supply
z DC line voltage adjustment facility
SHAOXING SILICORE TECHNOLOGY CO.,LTD
www. Silicore. com. cn
CHMC
1/15

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SC1062 pdf
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Silicore
SC1062/SC1062A
ELECTRIC CHARACTERISTICS
Characteristic
Symbol
Condition
continue
Min. Typ. Max. Unit
Receiving amplifier output QR (pin 4)
Output impedance
|Zos|
Voltage gain fro m IR to QR
Gv
Iline=15mA;RL=300
(from pin9 to pin4)
29.5
Gain variation with frequency
referenced to 800Hz
Gvf
f=300~ 3400Hz
Gain variation with
temperature referenced to 25°C
Gvt
Without R6;Iline=50mA
Ta m b = - 2 5 ~ + 7 5 ° C
THD=2%; RL=1500.22
since wave
Output voltage (RMS value)
Vo(rms )
drive;
R4=100kRL=4500.3
Iline=50mA;
Ip=0mA
THD=10%;
Output voltage (RMS value) Vo(rms )
R4=100k;
RL=150; Iline=4mA
Iline=15mA;
Noise Output voltage
(RMS value)
Vno(rms)
R4=100k
IR open-circuit
RL=300
4
31 32.5 dB
0.2 dB
0.2
0.33
dB
0.48
V
15 mV
50 µV
Mute input (pin 2)
HIGH level input voltage
VIH
1.5 Vcc V
LOW level input voltage
VIL
0.3 V
Input current
IMUTE
8 15 µA
Reduction of gain
MIC+ or MIC- to LN
Vo ltage gain fro m DTMF to
QR
SC1062 MUTE=HIGH
Gv
SC1062A MUTE=LOW
MUTE=HIGH
SC1062 R4=100 k;
Gv
RL=300
MUTE=LOW
SC1062A R4=100k;
RL=300
Automatic gain control input AGC (pin 5)
Controlling the gain from IR
to QR and the gain from
MIC+, MIC- to LN gain
control range
R6=110k(between
Gv AGC and VEE)
Iline=70mA
Highest line current for
maximum gain
IlineH
Lowest line current for
maximum gain
IlineL
70
70
-17
-17
-5.8
23
61
dB
dB
dB
dB
dB
mA
mA
SHAOXING SILICORE TECHNOLOGY CO.,LTD
www. Silicore. com. cn
CHMC
5/15

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SC1062 arduino
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Silicore
SC1062/SC1062A
Fig.9 Typical current Ip available from Vcc peripheral circuitry with Vcc>=2.2V.
curve (a) is valid when the receiving amplifier is not driven or when MUTE
=HIGH .curve(b) is valid when MUTE=LOW and the receiving amplifier is driven;
Vo(rms)=150mV,RL=150. The supply possibilities can be increased simply by setting
the voltage drop over the circuit VLN to a high value by means of resistor RVA
connected between REG and SLPE.
SHAOXING SILICORE TECHNOLOGY CO.,LTD
www. Silicore. com. cn
CHMC
11/15

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